php-doc-en/reference/pgsql/reference.xml
Philip Olson 173f0bdc2e MFB: Upgrade to the new-reference-structure
- Split reference.xml into book.xml, setup.xml, and examples.xml
- Moved from reference.xml to book.xml:
  - The intro text (partintro), and link to various pages
- Moved from reference.xml to setup.xml:
  - The rest: requirements, installation, configuration, and resources
- Changed the constants section to be an <appendix>
- Changed the intro ID from <extname>.intro to intro.<extname>


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@248799 c90b9560-bf6c-de11-be94-00142212c4b1
2007-12-23 04:15:57 +00:00

71 lines
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XML

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.32 $ -->
<reference xml:id="ref.pgsql" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<title>PostgreSQL &Functions;</title>
<titleabbrev>PostgreSQL</titleabbrev>
<partintro>
<section xml:id="pgsql.notes">
&reftitle.notes;
<note>
<para>
Not all functions are supported by all builds. It depends on your
libpq (The PostgreSQL C client library) version and how libpq is
compiled. If PHP PostgreSQL extensions are missing, then it is because
your libpq version does not support them.
</para>
</note>
<note>
<para>
Most PostgreSQL functions accept <parameter>connection</parameter> as
the first optional parameter. If it is not provided, the last opened
connection is used. If it doesn't exist, functions return &false;.
</para>
</note>
<note>
<para>
PostgreSQL automatically folds all identifiers (e.g. table/column names)
to lower-case values at object creation time and at query time.
To force the use of mixed or upper case identifiers, you must escape
the identifier using double quotes ("").
</para>
</note>
<note>
<para>
PostgreSQL does not have special commands for fetching database schema
information (eg. all the tables in the current database). Instead, there
is a standard schema named <literal>information_schema</literal> in
PostgreSQL 7.4 and above containing
system views with all the necessary information, in an easily
queryable form. See the <link xlink:href="&url.pgsql.manual;">PostgreSQL Documentation</link>
for full details.
</para>
</note>
</section>
</partintro>
&reference.pgsql.entities.functions;
</reference>
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